Traveling crane



H. E. BAKER 1,652,265.

TRAVELING CRANE F iled Ami-11 29, 1927 2 Sheets-Sheet l //v VENTOR f/uber/ 5. Baker 8) 6%W E F A TTORNE Y5 Dec. 13, 1927. 1,652,265

H. E. BAKER TRAVELING CRANE Filed April 29. 1927 2 Sheets-Sheet. 2

, 11v VENTOA;

Patented Dec. 13, 1927.

UttlT-ED srATEs PATENT orrica.

HUBEET E. BAK R/or MUSKEGON, MICHIGAN, AssrGNon'ro MANNING, MAXWELL &

MOORE, INC., OF M'USKEGON, MICHIGAN.

TRAVELING ORA -E.

Application filed April 29, 192?. Serial No. 187,507.

Themain objects of this invention are a I First, to provide in a traveling crane; an improved spring support. 7 7

Second, to provide in a traveling'crane of the double truck type an improved spring support which is very compact, does not add to the height of thebridge and is capableot Fig. l is an end view of a traveling crane embodying the features of my invention, a portion of the foot-walk being broken away. Fig. 2 is a vertical[longitudinal section througl'i one of the truck units on a linecorresponding-to line2-2 of Figs. 8 and l.

Fig. 3 is a detai'l'view partially in horizontal section on a hne corresponding to l1ne 3-3jot Figs'l and 2. I

Fig. 4 is a detail vertical section on a line corresponding-to line 4-4 ot Figs. 1', 2 and 3. In the embodiment illustrated I provide a bridge'structure designated generally by 4 the numeral 1* and comprising bridge'members 2 connected at their ends by the beams 3. As the structural details of the bridge structure itorm no part of this invention they are not fully illustrated or described herei'n'l The structure illustrated is of the double truck type, that is, there are two trucks at each end, and as these are substantial duplicates a description of one is all that is necessary.

posed in theembodiment illustrated at the end of one of the bridge elements 2 and constitiiting the support for the bridge strucwith abridge structure, or a truck therefor ture. These bolster members are chambered to 'receive'the inner ends of the wheel carrying members 5. These wheel carrying members are pivoted at 6 within'the bolster to project therefrom and are provided with suitable bearing boxes shown conventionally at 7 for the journals 8 of the wheels 9. The

" rail on which the Wheels travel carrying wheels '9.

Each truck unit comprises-a bolster 4; disconventional at 10. V I I Above their pivots 6*.the wheel carrying is shown;

members 5 are provided with thrust members 1i preferably curved as illustrated to coact with sockets 12 formed centrally'ot the heads I 18, These heads 13 arearranged in opposed pairsen'd provided with seats 15 for the I pairs of coiledsprings16 and 17 which are arranged in nested relation, the ends ofthe lnner springs engaging the positioning studs l8 projecting from the facesofthe heads 1 3.

The heads are connected by a tie rod 19 in the form of a bolt, the head 20 and thenut 21 constituting stops limiting the separate movement of the heads. The heads, however, are slidable on the rod. The head and nut are arranged in recesses 22 disposed centrally.

To limit the pivotal movement of the,

wheel carrying members on their pivots 6 I provide them with laterally projectingstops 28' which coactwiththe segmental slots 24 in the bolster, thus preventing excessive movement when relieved of a load, and also retaining the parts in proper relation when the Wheels are not supported on the rail.

One: of each pair of wheel carrying members-is provided with-bearings 25, indicated in-Fi'g. 3, for the shaft 26'- of the driving pinion 27. [This driving pinion coacts with a gear 28 secured to the journal ofone of the The driving features, however, are not made a partof the subject matter'of this application. 1

"I have illustrated and described my improvements in an embodiment which I consider very practical. As it is believed that the disclosure made will enable those skilled in the art toembody or adapt my improve ments as may be desired, modifications and other adaptations are not illustrated'or described. v

Havingthus described my invention What I claim as new and desire to secure by Let ters Patent is I v 1'; In a traveling crane, the combination comprising a chambered bolster, Wheels, I

thrust members above their -pivots, a spring unit comprising opposed head's coactin'g with said thrust members of said wheel carrying members, said heads having opposed spring seats thereon and opposed studs disposed centrally of their said seats, nested pairs of springs arranged on said seats with the end coils of the inner springs of each nested pair engaging said studs, a tie rod with which said heads are slidably engaged and having stops limiting the outward movement of said heads, and laterally projecting stops on said wheel carrying members disposed above their, pivots, said bolster having segmental slots coacting with said stops to limit the movement of said wheel carrying members on their pivots.

2. In a traveling crane, the combination with a bridge structure,of a truck therefor comprising a chambered bolster, wheels,

Wheel carrying members pivotally mounted in opposed relation within said bolster to project therefrom and having opposed thrust members above their pivots, a spring unit comprising opposed heads coacting with said thrust members of said wheel carrying members, said heads having opposed spring seats thereon and opposed studs disposed centrally of their. said seats, nested pairs of springs arranged on said seats with the end coils of the inner springs of each nested pair engaging said studs, and a tie rod with which said heads are slidably engaged and having stops limiting the outward movement of said heads.

.3. In a traveling crane, the combination 7 in opposed relation within said bolster to,

project therefrom and having opposed thrust members above their pivots, a spring unit comprising opposed heads coacting with said thrust members of said wheel carrying members, a spring element between said heads, a tie rod with which said heads are slidably engaged and having stops limiting. the outward movement of said heads, and laterally projecting stops .on' said wheel carrying members disposed above their pivots, said bolster having segmental slots coacting with said stops to limit the movement of said wheel carrying members on their pivots.

i. In a traveling crane, the combination with a bridge structure, of a truck therefor comprising a chambered bolster, wheels, wheel carrying members pivotally mounted in opposed relation within said bolster to project therefrom and having opposed thrust members above their pivots, a spring unit comprising opposed heads coacting with said thrust members of said wheel carrying mem bers, 'a spring element between said heads, and a tie rod with which said heads are slid ably engaged and having stops limiting the outward movement of said heads.

5. In a traveling crane, the combination with a bridge structure, of a truck therefor comprising a chambered bolster, wheels, wheel carrying members pivotally mounted in opposed relation within said bolster to project therefrom and having opposed thrust members above their pivots, a: spring unit comprising opposed heads coacting with said thrust members of said wheel carrying members, and a spring element between said heads.

6. In a traveling crane, the combination with a bridge structure, of a truck therefor comprising a chambered bolster, wheels, wheel carrying memberspivotally mounted in opposed relation within said bolster to project therefrom and having opposed thrust members above their pivots, a spring unit coacting with said thrust members of said wheel carrying members, and laterally proe jecting stops on said wheel carrying members disposed above their pivots, said bolster havingsegmental slots coacting with said stops to limit the movement of said wheel carrying members on their pivots.

7. In a traveling crane, the combination with a bridge structure, of a truck therefor comprising a chambered bolster, wheels,

- wheel carrying members pivotally mounted in opposed relation within said bolster to project therefrom and having opposedthrust members above their pivots, and a spring unit coacting with said thrust members of said wheel carrying members.

8. In a traveling crane, the combination of a bridge structure, a supporting bolster therefor, wheel carrying members pivotally mounted on sand supporting bolster in opposed relation, saidwheel carrying members being provided with opposed thrust members, and coiled springs arranged between said thrust members whereby said wheel carrying members areyieldingly supported on their pivots.

9. In a traveling crane, the combination of a pair of bridge members connected in spaced relation by beams disposed at the end of the bridge members, supporting bolsters disposed at theends of the beams, wheel carrying members pivotally mounted on said supporting bolsters in opposed pairs, ,s id wheel carrying members being provided with opposed thrust members, and coiled springs arranged between said thrust members whereby said wheel carrying members are yieldingly supported on their pivots.

10. In a traveling crane, the combination of a pair of bridge members connectedin spaced relation by beams disposed at the end ofthe bridge members, supporting bolsters disposedat the ends ofthe beams, wheel carrying members pivotally mounted on said supporting bolsters in opposed pairs, and springs arranged between said wheel carrying members whereby they are yieldingly supported on their pivots.

11. In a traveling crane, the combination ofa pair of bridge members connected in spaced relation by beams disposed at the ends thereof, supporting bolsters disposed at the ends of said bridge members, Wheels, Wheel carrying members pivotally mounted on said bolsters in spaced pairs, and springs 1 arranged between said spring carrying members whereby they are yieldingly supported hand.

HUBERT E. BAKER. 

